Modify columns of the lookup set for itemId field in SalesTable form

Hi,

When creating a new sales order, you must select the item number from a lookup. I want to modify the columns of this lookup.

In fact, salesTable form, I want to modify the columns shown in the lookup of Item number field.

I checked field groups of salesLine table, but couldn't find it. Can't find the method behind it too. Could anyone advise how to modify the columns in lookup of ItemId field in salesTable form?

Thanks in advance